Machine for making rivets.



No..65|,007. Pafented lune 5, I900. F. DANKS.

MACHINE FOR MAKING BIVETS.

(Application filed Apr. 1, 1899.) (No Model.) 8 SheetsSheet l.

Witnesses 7/ lmlenTor 42M%. @/m %z/ Patented huie 5, I900.

F. BANKS.

MACHINE FOR MAKING RIVETS.

(Application filed Apr. 1, 1899.)

6 Sheets-5heat 2.

(No Model.)

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No. 651,007. Patented lu ne 5, I900. F. BANKS.

IMACHENE Fun mums RIVETS.

(Application filed Apr. 1, 1899.)

(N0 Model.) 8 Sheets-Sheet 3.

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No. 65!,007. Patented June 5, I900. F. BANK-8..

MACHINE FOR MAKING RIVETS.

(Application filed Apr. 1, 1899.) (No Model.)

8 Sheets-Sheet 5.

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M KW WM/WL No. 65l,007. Patented lune 5, I900.

F. BANKS.

MACHINE FOR MAKING RIVETS.

(Application filed Apr. 1, 1899.) I (No Model.) 6 Sheets-Sheet 6.

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' ing rivets, and more particularly to improve- FRANK DANKS, OF

NiTED STATES" TROY, NEXV YORK.

MACHINE FOR MAKING RIVETS.

SPECIFICATION forming part of Letters Patent No. 651,007, dated June 5,1900.

Application filed April 1, 1899. Serial No. 7115353. (No model.)

of New York, have invented new and useful Improvements in Machines forMaking Rivets, of which thefollowing is a specification.

My invention relates to machines for makments upon the machine for thatpurpose for which Letters Patent were grantedme November 25, 1890, No.441,229. These improvements relate to a means for adapting the mechanismillustrated in said Letters Patent for making rivets of differinglengthsaud sizes, also to an improved means for feeding the blanks tothe dies, and an improved mechanism for operating the header in whichthe header-dies are placed, all of which will be more fully set forthhereinafter in the claims.

containing eighteen figures, illustrating the application of myinvention, with the same designation of parts by letter reference usedin all of them. v

Of the illustrations, Figure 1 is a front elevation of a rivet-makingmachine containing i my invention and improvements. Fig. 2 is a sideelevation of the machine shown at Fig.

1,with that one of its sides which is opposite to that at which power isapplied illustrated as facing the view and having the side extension ofthe frame or housing wherein the outer end of the driving-shaft journalsbroken out. Fig. 3 is a vertical section taken through the die-wheel,die-sinks, stocks, dies, blanks, notches in the cutter'blades, andthrough one of the grooves in the platen and at right angles to the axleof the die-wheel. Fig. 4 is a vertical section of a part of the headerand illustrating the mechanism by which the header is locked when it israised. Fig. 5 is another section of the same parts that are illustratedat Fig. 4, but with the header shown as unlocked. Fig. 6 isasectiontaken from side to side through a part of the diewheel, centrallythrough the die holder or stock and dies of the die-wheel, the header,the header-die holder, header-dies, and the rivet-ejector and its pinsby which the finished rivets are. removed from the dies, together with abroken-out part of the machinehousing at each end of the die-wheel. Fig.7 is a section taken on the line x m of Fig. 2. Fig. 8 isa rear view ofthe ratchet-wheel, of the die-wheel shaft, and the time-ring thereon.Fig. 9 is an edge view of the ratchetwheeland time-ring of the die-wheelshaft, showing also a part of the latter. Fig. 10 is an isometri'calperspective of the shearing- Y blades by which the blanks are cut fromthe entered rods. Fig. 11 is a section taken on the linenc qc of Fig.10. Fig. 12 is a top View of one of: the die-wheel dies, in which latterthe shanks oft-he rivets are shaped. Fig. 13

p is a section taken on the line x asfiof Fig. 12.

Fig. 14 is a bottom view of one of the headerdiesby which the heads ofthe rivets are swaged' into shape. Fig. 15 is a side elevatio n of'one:of the header-dies, and Fig. 16 is a section taken on the line 03 00 ofFig. 15. Fig. 17 is a vertical section ofone of the header-dies and apart of one of the die-holders andon'e oE'the dies. Fig. 18 is atransverse section tak en'on the line X X of Fig. 3. The several partsof the mechanism thus illustrated are designated by letter reference,and the function of the parts is described as follows: The frame orhousing in which the mechanism is mounted is designated at H, and it isprovided witha supporting-base U and an olfset H The driving-shaft isdesignated at S, and it is arranged to journal at one of its ends in theoffset-housing and at its other end in the housing proper. Thedriving-pulley P is mounted upon the driving-shaft inside of where itjournals in the offset-housing, and between the pulley Pand the housingproper there is mounted upon the driving-shaft the pinion P The letter Sdesignates another shaft having its hearings in the top of the housingproper, and where extending laterally beyond the latter there is mountedupon this lastnamed shaft the gear-wheel W, arranged to mesh into andreceive power from the'pinion the die-wheel exterior atdiametrically-opposite poiuts, with the horizontal center of these sinks1 arran ed to be in line with each' other and to have their horizontalcenters parallel to the axis of the die-wheel shaft.

These sinks r are each constructed-with an encircling shoulder r and aninner encircling shoulder and they are each formed to receive one of thedies (1 of which there is one shown as detached at Fig. 13 and one shownin connection with one of the header-dies, part of one of the die-wheeldie-holders, and one of the rivet-dies at Fig. 17 and with the parts inposition at Fig. 6. Each of the dies (1 is made in two partsan outerpart (designated at (1 and an inner part (indicated at (7 thelatterhaving formed therein an encircling shoulder (1 arranged to comeopposite to, but not to be in contact with, the shoulder r formed onthat one of the sinks r in which the die part (1 is located.

The letter (Z designates a shoulder formed in each of the die parts (1,each arranged to come opposite to, but not in contact with, the shoulderr of that one of the sinks r in which the die part (1 is located. Asthus made there will be a space (1 between the shoulder (Z of the diepart (I and the shoulder r of the sink and a space (1 between theshoulder d or the die parts (1 and the shoulder r of the recess, inwhich place these spaces (1 and (1 are formed to adapt the dies toadjust themselves and to prevent expansion from heat interfering withtheir work.

The die parts (1 and (1*, by which the shanks of the rivets are shaped,are made to taper inwardly slightly, as is shown between the letters iand t at Figs. 13 and 17, it being the pn rpose of so shaping l hem tobetter adapt them to enter the holes in which they are to be clenched.

The header is designated at A and the header die-holder at I. Thisdie-holder has recesses formed in what is its under side when inposition for use in the machine, and these recesses are designated at aand arranged to be in line with each other in thedie-holder I and wherewithin the latter-to be centrally in line with the axis of the die-wheelshaft. Each of these recesses (t is provided with a rivet-heading die,(designated at (L5,) and each of which has in its bottom face a concaverecess a, which by compression upon the outer end of the blanks withinthe dies (Z will form the heads thereon. This concave recess in each ofthe header-dies is constructed to extend over the top and to make ashearing engagement at with the outer face of each of the die parts (1*to cut from the rim of the head any fin or excrescence that may havebeen formed thereon. These header-dies are each connected within one ofthe recesses (t in the stock I by means of the encircling groove a,formed in the die exterior, and a setserew a7, threaded into and throughthe stock or holder I,with the inner end of the set-screw within thegroove a, formed in the die. As thus constructed dies-of differing sizesmay be used in the same holders or stock I.

The letters b designate steadypins or guide-bars, each of which isarranged in a recess b in the under surface of the stock or die-holderI, of which recesses there are two. Each 'of these steady-pins orguide-bars b is provided with an encircling groove b formed to encirclethe upper part of the bar, and a setscrew b threaded into and throughthe stock or die-holder I to enter the groove I) in each of the bars 0one of the set-screws thus placed being shown at Fig. 3.

The letters I) designate slideways formed in the die stock or holder Dbetween the sinks 0, each of which slideways is adapted to receive andsteadily direct downwardly one of the bars or pins b when the stock ordieholder 1 is descending, and thus secure to the latter accuracy andsteadiness of movement.

\Vithin the die-wheel at four diametricallyopposite points there isarranged within a horizontal passage-way O a bar 13, with each of saidpassage-ways arranged inside of and diametrically in line with one ofthe recesses R and holders I), with the ends 6 a of each of said barsextending beyond the ends E E of the die-wheel. 4

The letters 1) designate pins that are projected from the outer side ofeach of the bars l, with each of said pins 19 at its end and whereextending beyond its shoulder 11 being arranged to pass through a slotformed in the bottom of each of the recesses R to enter one of the diesd on the outer ends of which pins thus entered the inner ends of theblanks rest while being headed.

\Vhen the die-wheel is being revolved with four alternating periods ofmotion and rest, as will be hereinafter more fully described, and theprojecting ends c e of the bar 13 come in contact with the stationarycam C, of which there is one on each side of the inner ends of thehousing, the bar and pins are forced outwardly, the pins as so operatedforcing the rivets from the dies (l These cams C are indicated by dottedlines at Fig. 3 and by full lines at Fig. 18. As the wheel continues torevolve the outer projecting ends e e of the bar B will engage with thecam 0 of which there is one on the inner side of the housing at each endof the diewheel, and by which last-named engagement of the bar B thelatter and the pins 11 are forced into a position for the insertion ofanother series of blanks. ()ne of these cams is shown in dotted lines atFig. 3 and in full lines at Fig. 18.

The header (designated at A) is arranged to vertically move in slideways S", connected to the housing sides, and the header-die holder orstock is secured within the interior of the header by means of bolts,and the relative position of the header-dies to the 'diewheel dies, asto the descending distance of the header-dies, is regulated by means ofscrew-bolt t, arranged to bear upon the stopbar J, arranged in theheader interior 2' The header (designated A) is arranged to be raisedand latched and then tripped to descend by gravity and immediatelythereafter to be forced downwardly by a swaging effort, with thesesuccessive operations repeated every time the die-wheel brings intoposition beneath the header the dies loaded with blanks. The mechanismby which the header is thus operated is described as follows:

The letter L designates a bell-crank lever which at its angle Z ispivoted to a bracket Z projected from the housing. This leverL at itsupper end is constructed with a beak Z having the cam-surfacesf f and atits lower end this lever is provided with a horizontallyprojected foot1". When the shaft S is revolving and the cam designated at K comes incontact with the end f of the beak, it operates the lever L in such amanner that its foot Z will pass through the opening 0 to enter theangular recess 0 and when the cam K has passed from oif the face f toengage with the under face of the beak the cam operates the lever L toraise the header A in its slideways. This header as thus raised islatched or stopped so as to hold it as thus raised, and tripped to haveit descend by gravity by a mechanism described as follows:

The letter F designates another bell-crank lever, which atits angle ispivoted toabracket f projected from the rear side of themachine-housing.- The lever F has a horizontally-placed top arm f and avertically-depending arm f which latter at its lower end is forked at fThe letter J 2 designates a horizontally-arranged latch or stop-pinarranged in a slidewayj formed in the rear Wallof the machineframe, backof the header A, and at its outer end this stop-pin 'is encircled by ahelical springj.

The letterj designiates a pin projected from the exterior of the tube 3,which pin is arranged to enter the forked end of the depending arm ofthe lever, (indicated at f The letter j designates a recess formed inthe rear wall of the header at such a position therein relativelytothestop-pin J that when.

the header is raised to reach the limit of its upward movement thisstop-pin will be forced to enter the recessj and thus latch and hold theheader as raised. As the shaft S in revolving causes its pin K to comein contact with the arm f of the bell-crank lever F it operates the,depending arm j? to move outwardly the stop-pin, when the header A, thusreleased, will descend by gravity. The construction of the stop-pin Jand the bell-crank lever F is shown atFigs. 4 and 5.

The blanks from which the rivets are formed are cut from the ends ofrods which have been heated and are moved to enter the mechanism bymeans of the feed-rollers, which are circumferentially grooved invertical alinement with one of the feed-rollers mounted eccentrically onits shaft, whereby its perimeter will come in contact with that of theother roller to move the rods at regularly-intermitting periods. Whenbeing moved inwardly, the length of the blanks is regulated by anadjustable stop-bar, and when reaching the latter the blanks are cutfrom the entered-bar ends by vertically-operated blades. After being cutthe blanks fall by gravity into grooves formed in the upper surface of atable or platen, wherein they are moved to entrically upon its shaft 0and operated to turn by traction with the upper roller. These rollersare perimetrically grooved in vertical alinement at g, and the upperfeed-roller receives power from a sprocket-wheel o arranged on the sameshaft, and a sprocketchain belt o running upon a sprocket-wheel on theshaft S and upon the sprocket-wheel v The feed -roller V runscontinuously when the machine is being operated, but the roller V onlyruns when actuated by its traction with the other roller.

The letter G designates a gage arranged to regulate the length at whichthe blanks shall be out from the entered rods.

The letter 9 designates a vertically-placed plate, against the outerface of which the entered ends of the rods will abut when being cutintoblanklengths. This vertically-placed plate 9 is made adjustable as toits distance from the cutting or shearing blades by being movableoutwardly and inwardly upon the rods 9 of which there are two, but ofwhich only one is shown. This plate 9, as adjusted on the rods is heldby nuts g of which there is one threaded into each of the rods g at eachside of the gage-plate.

The letters (1* and C designate the cutting or shearing blades,both ofwhich are arranged at the front of the machine and bywhich the blanksare cut from the entered rods. The blade C is stationary, and the upperblade 0 is arranged to be moved vertically upon slides S of which but apart is shown at Fig. 10, and when said blade 0 is moved downwardly itis thus operated against the force of springs S of which there is onearranged beneath each of its ends. The stationary blade 0 has openingson for thelateral passage of the rods 0" from which the blanks are cut,and the shearing-blade O has semicircular and inwardly-tapering recessesm form ed on its lower edge to be vertically in line with the passages mof the stationary blade, as shown at Figs. 10 and 11. To operate theseblades, the following mechanism is used:

The letter R designates a rock-shaft,which is arranged to journal ateach of its ends in the machine-housing, and the letters A desi gnate atappet-arm, which at one of its ends is keyed to the rock-shaft R Theletter M designates a tappet-wheel arranged upon the die-wheel shaftbetween the die-wheel and the time-1 in g thereon, said tappct-wheelhaving four tappets T, that are diametrically and oppositely locatedthereon.

The letters N designate arms, of which there is one at each end of therack-shaft R keyed to the latter to be operated by it to engage with andbear down upon the blade C and thus cause it to descend and make ashearing engagement with the blade C and when the engagement between thetappets and the tappet-arm ceases the springs S will become active tomove upwardly the shearing-blade C. This tappet-wheel M is indicated bya dotted line at Figs. 2 and 3 and in edge elevation at Fig. 1.

To deliver the blanks after having been cut, as before described, and tohave them enter the dies (1 by which they are shaped, the followingmechanism is employed:

The letter L designates a crank-arm, which at p is keyed to therock-shaft R, with the latter arranged to journal in the frame part 8 c,with the lower end of t-hislever L (when extending below its connectionto the rockshaft) attached to the outerend of the spring S, the latterhaving its inner end connected to the base U.

The letters a n designate arms, which at their lower ends 01 are eachkeyed to the rock-shaft B, so as to move with it,'and at their upperends each of these arms is forked at n to receive ahorizontally-arranged bar it, to which latter there are connected andhorizontally projected inwardly four plungers n. This bar 11 is providedwith a guiderod of at each of its ends, having a slideway in which tomove and steady the movement of the bar a and the plungers n.

The letters P designate a horizontally-arranged plat-en or table havingin its upper surface four grooves a with the latter arranged to behorizontally in line with the plungers n and the dies at as a series ofthe latter are brought into position by the operation of the die-wheel,as will be detailed hereinafter. These platen-grooves are shown at Fig.18.

The letters K designate a wiper-cam arranged upon the inner face of thesprocketwheel 4), and in such a position thereon that it will at eachrevolution of said sprocketwheel engage with the upper end Z of crankarmL and cause the latter to partially r'otate the rock-shaft R When thelatter is thus moved, it will operate the arms n n and connected bar itto actuate the plungers, and thus force the blanks lying in theplatengrooves g to enter that series of the dies d which are in aposition to receive them. When the engagement between the wiper-cam andthe crank-arm L ceases, the spring S becomes active to give to therock-shaft a reverse movement in partial rotation, whereby the plungersare drawn outwardly from the grooves of the platen.

There is arranged to engage with the outer face of the dies d when eachseries of the latter are at the under side of the die-wheel a series ofrivet=ejectors,(designated at ti) and the function of these ejectors isto engage with and pull from the die in which held any rivet that hasnot been removed from the dies by the operation of the pins 17 beforecoming under the action of the ejectors. These latter are operated asfollows:

The letters 71" designate a bar that is connected to and outwardlyprojected from the rock-shaft R", so as to move with the latter,

said bar having formed on its upper face the cam-surface h.

The letters 15 designate an ejecting-lever connected to a horizontalshaft 25, that is j ournaled in the machine-base, there being four suchejectors arranged upon said shaft i to be together actuated thereby, andeach of said-ejectors is arranged to be vertically in line with one ofthe dies (i when each of the latter as one of a series is on the underside of the die-wheel. The inner end of each of these ejectors is forkedat i so that when the inner end of the ejectors is raised it will engagewith and remove any blank remaining in the dies (1 by the downwardmovement of the forked end of the ejector as the outer end of the latteris raised by the cam h.

The die-wheel is actuated with four alternating periods of motion andrest at each complete revolution by means of the following mechanism:

The letter D designates a crank-disk which is arranged upon and keyed tothe shaft S when extending beyond the housing H.

The letter P designates a pitman which at its upper end is made tojournal upon a Wristpin 19, projected from the crank-disk D with thelower end of this pitman entered between and pivoted at p to the forkedarms of the spring-pawl bar B (Shown as detached at Fig. 7.) Thisspring-pawl bar at its lower end is journaled on so as to freely turnwith the end of the die-wheel shaft where projecting beyond the housingH.

The letters M designate a ratchet-wheel which is arranged to turn on thedie-wheel shaft, and this ratchet-wheel has upon its outer side face theratchet-bevels m terminating in stops on, and on the inner edge of itsperimeter provided with the recesses of, having the stops m as shown atFigs. 2 and 8 by dotted lines and full lines at Fig. 9.

The letters or designate a spring-pawl arranged within a cap k securedto the exte rior of the pawl-bar l3 and having a spiral spring 10encircling the outer end of the pawlpin where within the cap on the capside of the collar The inner end of the pawl where passing through thebar B is arranged to run on the bevels of the ratchet-wheel M to engagewith stops thereon, so that the ratchet-wheel will move a quarter of aturn at each complete revolution of the shaft S The letter Y designatesa stop-pawl or detent which at its upper end is pivoted to a stud 11projected outwardly from the housing and at its lower end y providedwith a latch-form end adapted to engage with one of the stops m toprevent any back movement of the ratchet when coming to a rest.

The letters 1 designate a spring by which the detent end of thestop-pawl Y is kept in contact with the rim of the ratchet-wheel.

The letter Z designates another, detentpawl which is pivoted to the stud1 back of the stop-pawl Y, and this detent Z has a latch-form lower end52 and is provided with a spring zi by which its latch-form end isforced to contact with the perimeter of the ratchet-wheel, where thereare located the recesses m and stops m to thus prevent the ratchet-wheelfrom making an ad Vance movement after coming to a period of rest.

The letter Q designates a rider which is connected to the bar B as shownat Fig. 2, and its function is to bear on the perimeter of theratchet-wheel when moving, and thus prevent the detent Y from enteringthe recesses m when passing.

The letters T designate a time-wheel,which is illustrated in positionupon the machine at Fig. 1 and as connected to the ratchet-wheel atFigs. 8 and 9. This time-wheel is keyed to the die-wheel shaft S and itconnects with the inner face of the ratchet-wheel by means of aprojection u on the inner face of the latter, two lugs "u? if, of whichlatter there is one projected from the rim of the time-wheel, so as tobe on each of the opposite sides of the projection u, and a set-screw uof which there is one threaded into each of the lugs 10 so that theinner end of the set-screws will engage with and bear upon one of theopposite sides of the projection 'Lb. As thus con nected to thedie-wheel shaft S the time ring or wheel is adapted to be adjustablyconnected to the ratchetwheel, and thus regulate the time at which theregular alternating periods of quarterly rotation and intermediateperiods of rest shall occur with relation to the operation of theheader, the shearing mechanism, and the rivet-ejecting mechanism.

The operation of the mechanism thus illustrated and described is asfollows: The rods from which the rivets are to be made when heated arecaused to enter the grooves formed in the perimeters of the rollsdesignated at V and V with the eccentric face of the upwith thestationary blade (3, and thus out the blanks from the entered ends oftherods. These blanks after being cut each descend, so as to enter oneof the grooves n of the platen P, where they are each operated upon byone of the horizontally-moving plungers (designated at n) to enter oneof the dies d of that series of the latter which hasbeen brought intoposition by the movement of the die-wheel. wheel makes progressivelyanother quarter of a revolution, with a succeeding period of rest, withthe dies d, which had been supplied with blanks brought into positionbeneath the header A and header dies a While thus placed and at rest thecam-pin 73, arranged upon the shaft S by the move- .ment of the lattertrips the header from its locked position as held by the pin J thusreleasing the header for it to descend by gravity, with its diesengaging with the blanks to force them into position within the dies 61of the die-wheel. After the foregoing has been accomplished and beforethe die-wheel again moves the cam K upon the shaft S comes in contactwith the top of the header to force the latter downwardly, and thuscause the header-dies to swage the heads of the blanks and to finishtheirshape within the die-wheel dies by pressure. Immediately succeedingthis movement of the headerand header-dies they are immediately raised,and the dies holding the finished rivets are by the succeeding movementsof the die-wheel carried downwardly and rearwardly, while another set ofblanks and dies come into position under the header to be operated uponas before. wardly the ends of the bar B come in contact .with the cam O,by which the pins 19 on said bar and the latter are moved outwardly,thus forcing the finished rivets from the dies, and

before the latter and the die-wheel comeintoa position whereat blanksmay be again supplied to the thus-emptied dies the bar 13 comes incontact with the cam 0 whereby the pins 19 are again placed in positionto support the inner ends of the blanks.

While I have shown the mechanism which cuts the blanks from the heatedrods as operated connectedly with the die-wheel, if dc sired the blankscan be out by other mechanism and as heated supplied to theplatengrooves to be forced into the dies of the diewheel on coming intoposition to receive them.

By making the die-wheel dies each in two parts and with encirclingspaces between the shoulders of the die parts and the sinks in which thelatter are placed the dies are made better adjustable to receive theentering This having been done, the die- When being carried'downwardlyrear-- blanks, and by having the encircling spaces between the dies andthe sinks the dies have provision made for their expansion by heat.

Having thus described my invention,what I claim, and desire to secure byLetters Patent, is

1. In a machine for making rivets, the combination with a die-wheelmounted upon a shaft and having recesses in its perimeter, and providedwith means to be operated with alternating periods of rotation and restsubstantially as described; of a stock mounted in each of said recesses;sinks arranged in each of said stocks; a two-part die arranged in eachof said sinks; a header provided with header-dies and operated todescend bygravity upon blanks in said die-wheel dies when the latter areat rest beneath the header; and means whereby said header immediatelyafter its descent is operated to bear upon and swage said blanks, andthen to rise from off them substantially as shown and described.

2. The combination with a die-wheel mounted upon a shaft, and havingmeans to be operated with alternating periods of rotation and rest,siibstantially as described, and provided with dies arranged in seriesin its perimeter; of a header arranged in slideways above the die-wheeland provided with headerdies, with the latter and the header operated todescend bygravity upon blanks in the dies of the die-wheel, when thelatter is at rest beneath the header; and means substantially asdescribed whereby pressure is applied to said header and header-diesafter their descent upon the blanks to thus swage the heads and shapethe rivets, with said header and dies operated to rise before thedie-wheel commences to again move, substantially as shown and described.

The combination with a die-wheel mounted upon a shaft and having meansto be op erated with alternating periods of rotation and restsubstantially as described, and provided with dies arranged in series inits per-- imeter; of a header arranged in slideways above the die-wheeland provided with headerdies each having a concave recess in its undersurface, and which recess at its lower circular edge is adapted to makea shearing engagement with the circular outer face of the top of thatone of the die-wheel dies with which it engages; with said header andheader-dies operated to descend by gravity upon the blanks in the diesof the die-wheel when the latter is at rest beneath the header; andmeans substantially as described whereby pressure is applied to saidheader and headerdies after their descent upon the blanks to thus swagetheir heads and shape the rivets, and with said header operated to risebefore the die-wheel commences to again move substantially as shown anddescribed.

4. In a machine for making rivets the combination with a die-wheelmounted upon a shaft, and provided with means to be actuated withalternating periods of rotation and rest; of recesses formed in theperimeter of said die-wheel; a stock in each of said recesses; a seriesof sinks formed in each of said stocks each having two encirclingshoulders; a two-part die arranged in each of said sinks with each ofsaid die parts having formed thereon an exteriorly-encircling shoulderwhere eircumferentially opposite to the adjacent shoulder of the sink inwhich the die part is placed, to thereat inclose a space between thedies and the sinks; and a header having a header-die and provided withmeans to be operated substantially as, and for the purposes set forth.

5. In a machine for making rivets the combination with a die-wheelmounted upon a shaft, and provided with means whereby to be actuatedwith alternating periods of rotation and rest, of dies mounted in seriesin the perimeter of said die-wheel at diametricallyopposite points; ahorizontally arranged platen provided with grooves in its upper surfaceadapted to receive blanks; and plungers operated to move in said groovesto force blanks therein into the die-wheel dies when each series of thelatter come to a period of rest horizontally in line with said grooves,substantiallyas and for the purposes set forth.

(3. In a machine for making rivets the combination with a die-wheelmounted upon a shaft, of means whereby said die-Wheel may be actuatedwith alternating periods of rotation and rest; dies mounted in series inthe perimeter of said wheel, at diametrically-opposite points; ahorizontally-arranged platen provided with grooves in its upper surface;rolls adapted to move inwardly the rods from which the blanks are to becut at each time the die-wheel comes to a period of rest; a gage againstwhich the entered rods will abut; a shearing mechanism whereby theblanks will be cut from the rods to descend int-0 the platengrooves; andplungers operated to force the blanks to enter the die-wheel dies whenat rest, substantially as shown and described.

7. In a machine for making rivets, the combination with shank-formingdies, of heading-dies each having a concave recess in its swaging-face,and operated by gravity; and in immediate sequence thereto to swage theheads of the blanks and finish their shape within the die-wheel dies bypressure, substantially as shown and described.

8. In a machine for making rivets, the combination with a die-wheelmounted upon a shaft, and provided with means to be actuated withalternating periods of rotation and rest substantially as described; ofrivetshank-forming dies arranged in series in the perimeter of thedie-wheel; a header having slideways in the housing above the die-wheel,and provided with header-dies upon its under surface; latching mechanismconnecting said header to the housing when raised; and meanssubstantially as described whereby Signed at the city of Troy, New York,this 10 16th day of February, 1899, in the presence of the two witnesseswhose names are hereto said latching mechanism may be tripped, and theheader actuated to descend by gravity, with its dies engaging with theblanks in the die-wheel dies when at rest beneath the written.

header with the latter immediately after its Y descent actuated byswaging pressure, and FRANK BANKS then caused to rise, and be againlatched auto- Witnesses:

GEO. M. PAYFER, W. E. HOG-AN.

matically, substantially as, and for the purposes set forth. I

